US Bridges

Mn 1 over Snake R Watershed

Good

Marshall County, Minnesota · 1.5 MI E of JCT TH 75 · Structure no. 45X03

Built
2005
20 years old
Condition
Good
inspected September 2021
Type
Culvert
Concrete
Length
54 ft
3 main spans
Daily traffic
1,500
2018 count
Owner
State
State Highway Agency

About this bridge

Mn 1 over Snake R Watershed is a concrete culvert carrying Mn 1 over Snake R Watershed in Marshall County, Minnesota. It was built in 2005, so it is 20 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,500 vehicles a day, roughly 15% of them trucks, projected to reach 1,350 by 2038. The structure is 54 ft (16.6 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesMn 1
CrossesSnake R Watershed
Location1.5 MI E of JCT TH 75
RouteState Highway 1
CountyMarshall County
StateMinnesota
Coordinates48.1952, -96.7458
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.6 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 25 or greater
Structure length54 ft (16.6 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2018)
Projected traffic1,350 by 2038
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 1 over Snake R Watershed built?

It was built in 2005, making it 20 years old in 2025.

What condition is Mn 1 over Snake R Watershed in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2021.

How much traffic does Mn 1 over Snake R Watershed carry?

About 1,500 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is Mn 1 over Snake R Watershed?

The structure is 54 ft (16.6 m) long with a longest span of 16 ft (4.9 m).

Who owns Mn 1 over Snake R Watershed?

It is owned by the State Highway Agency.